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      <a href="../../../index.html">All files</a> / <a href="index.html">javascripts/SqlLab/components</a> QueryAutoRefresh.jsx
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        <span class="strong">27.59% </span>
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        <span class="strong">29.63% </span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import React from 'react';
import { bindActionCreators } from 'redux';
import { connect } from 'react-redux';
import * as Actions from '../actions';
&nbsp;
const $ = require('jquery');
const QUERY_UPDATE_FREQ = 2000;
const QUERY_UPDATE_BUFFER_MS = 5000;
&nbsp;
class QueryAutoRefresh extends React.PureComponent {
  componentWillMount() {
<span class="cstat-no" title="statement not covered" >    this.startTimer();</span>
  }
  componentWillUnmount() {
<span class="cstat-no" title="statement not covered" >    this.stopTimer();</span>
  }
  shouldCheckForQueries() {
    // if there are started or running queries, this method should return true
    const { queries } = <span class="cstat-no" title="statement not covered" >this.props;</span>
    c</span>onst queryKeys = <span class="cstat-no" title="statement not covered" >Object.keys(queries);
    c</span>onst queriesAsArray = <span class="cstat-no" title="statement not covered" >queryKeys.map(<span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >key =&gt; queries[key]);</span></span>
<span class="cstat-no" title="statement not covered" >    return queriesAsArray.some(<span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >q =&gt;</span></span></span>
      ['running', 'started', 'pending', 'fetching'].indexOf(q.state) &gt;= 0);
  }
  startTimer() {
<span class="cstat-no" title="statement not covered" >    if (!(this.timer)) {</span>
<span class="cstat-no" title="statement not covered" >      this.timer = setInterval(this.stopwatch.bind(this), QUERY_UPDATE_FREQ);</span>
    }
  }
  stopTimer() {
<span class="cstat-no" title="statement not covered" >    clearInterval(this.timer);</span>
<span class="cstat-no" title="statement not covered" >    this.timer = null;</span>
  }
  stopwatch() <span class="cstat-no" title="statement not covered" >{</span>
    // only poll /superset/queries/ if there are started or running queries
<span class="cstat-no" title="statement not covered" >    if (this.shouldCheckForQueries()) {</span>
      c</span>onst url = <span class="cstat-no" title="statement not covered" >'/superset/queries/' + (this.props.queriesLastUpdate - QUERY_UPDATE_BUFFER_MS);
<span class="cstat-no" title="statement not covered" >      $.getJSON(url, <span class="fstat-no" title="function not covered" >(</span>data) =&gt; {</span>
<span class="cstat-no" title="statement not covered" >        if (Object.keys(data).length &gt; 0) {</span>
<span class="cstat-no" title="statement not covered" >          this.props.actions.refreshQueries(data);</span>
        }
      });
    }
  }
  render() {
<span class="cstat-no" title="statement not covered" >    return null;</span>
  }
}
QueryAutoRefresh.propTypes = {
  queries: React.PropTypes.object.isRequired,
  actions: React.PropTypes.object.isRequired,
  queriesLastUpdate: React.PropTypes.number.isRequired,
};
&nbsp;
f</span>unction <span class="fstat-no" title="function not covered" >mapStateToProps(state) {
<span class="cstat-no" title="statement not covered" >  return {</span>
    queries: state.queries,
    queriesLastUpdate: state.queriesLastUpdate,
  };
}
&nbsp;
f</span>unction <span class="fstat-no" title="function not covered" >mapDispatchToProps(dispatch) {
<span class="cstat-no" title="statement not covered" >  return {</span>
    actions: bindActionCreators(Actions, dispatch),
  };
}
&nbsp;
export default connect(mapStateToProps, mapDispatchToProps)(QueryAutoRefresh);
&nbsp;</pre></td></tr>
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